package com.shaokel.repository;

import com.shaokel.pojo.Blog;

import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.data.jpa.repository.Modifying;
import org.springframework.data.jpa.repository.Query;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

/**
 * @author 少丶客
 * @ClassName BlogRepository
 * @Description TODO
 * @Date 2020/6/26 14:47
 * @Vesion 1.0
 */
@Repository
//JpaSpecificationExecutor用于做复杂查询，例如分页查询等
public interface BlogRepository extends JpaRepository<Blog,Long>, JpaSpecificationExecutor<Blog> {

    @Query("select b from Blog b where b.recommend = true")
    List<Blog> findTop(Pageable pageable);

    @Query("select b from Blog b where b.title like ?1 or b.content like ?1")
    Page<Blog> findByQuery(String query, Pageable pageable);

    @Transactional
    @Modifying
    @Query("update Blog b set b.views = b.views+1 where b.id = ?1")
    int updateViews(Long id);

    @Query("select function('date_format',b.createTime,'%Y') as year from Blog b group by function('date_format',b.createTime,'%Y') order by  year desc")
    List<String> findGroupYear();

    @Query("select b from Blog b where function('date_format',b.createTime,'%Y') = ?1 ")
    List<Blog> findByYear(String year);
}